Răspuns :
P=2×L+2×l
L=lungimea
l-latimea
P=perimetrul
L=113m
P=436m
436 m=2×113m+2×l
436m=226m+2×l
2×l=436m-226m
2×l=210m
l=210m÷2
l=105
L=lungimea
l-latimea
P=perimetrul
L=113m
P=436m
436 m=2×113m+2×l
436m=226m+2×l
2×l=436m-226m
2×l=210m
l=210m÷2
l=105